Peter Apfelbaum
type: MusicGroup
description: Peter Noah Apfelbaum (born August 21, 1960) is an American avant-garde jazz pianist, tenor saxophonist, drummer, and composer born in Berkeley, California. Career thumb|right|300px|Apfelbaum and Paul
popularity: 2
followers: 333
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x7a19dd4bc67ff6f2499a25ef60ac24098793e72f98cc43a62067c3df166faa17
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x7a19dd4bc67ff6f2499a25ef60ac24098793e72f98cc43a62067c3df166faa17","name":"Peter Apfelbaum","registered_at":"2026-06-17T04:30:10Z","symbol":"NIM1281540","token_address":"0xffa80c1ccb1daba976fd506b26aa891caf0762a7","type":"artist","uuid":"6f998bed-b6c6-455c-9f2d-aada35cbcb64"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a19dd4bc67ff6f2499a25ef60ac24098793e72f98cc43a62067c3df166faa17. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f998bed-b6c6-455c-9f2d-aada35cbcb64.json and https://artists.proofprofile.net/proofs/artist/6f998bed-b6c6-455c-9f2d-aada35cbcb64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x7a19dd4bc67ff6f2499a25ef60ac24098793e72f98cc43a62067c3df166faa17","name":"Peter Apfelbaum","registered_at":"2026-06-17T04:30:10Z","symbol":"NIM1281540","token_address":"0xffa80c1ccb1daba976fd506b26aa891caf0762a7","type":"artist","uuid":"6f998bed-b6c6-455c-9f2d-aada35cbcb64"}
track: Funeral Oration
  type: MusicRecording
  duration: PT2M19S
  duration ms: 139746
  explicit: false
  by artist: Doug Wieselman
  by artist: Peter Apfelbaum
  by artist: Steven Bernstein
  by artist: Jeff Cressman
  by artist: Danny Frankel
  by artist: Bob Lipton
  by artist: Gina Leishman
  in album: Kamikaze Ground Crew: The Scenic Route
    type: MusicAlbum
    date published: 1990-01-01
  genre: tzadik
  isrc code: US4QP0440003
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4QP0440003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T12:24:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe4f0bc641f96cb9b8162aed2dea192fb901af1b88ac0d17aadcb5235c7f6b0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4QP0440003.
    date published: 2026-07-31T12:24:41Z
  audio: Funeral Oration
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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      value: -21.709
    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
      value: Major